int env_set(HASHTBL * task_tbl, oph_operator_struct * handle)
{
	if (!handle) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Null Handle\n");
		return OPH_ANALYTICS_OPERATOR_NULL_OPERATOR_HANDLE;
	}

	if (!task_tbl) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Null operator string\n");
		return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
	}

	if (handle->operator_handle) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Operator handle already initialized\n");
		return OPH_ANALYTICS_OPERATOR_NOT_NULL_OPERATOR_HANDLE;
	}

	if (!(handle->operator_handle = (OPH_SPLIT_operator_handle *) calloc(1, sizeof(OPH_SPLIT_operator_handle)))) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Error allocating memory\n");
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_SPLIT_MEMORY_ERROR_HANDLE);
		return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
	}
	//1 - Set up struct to empty values
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_input_datacube = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_output_datacube = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_input_container = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_output_container = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_job = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->fragment_ids = NULL;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys = NULL;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys_num = -1;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->server = NULL;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->sessionid = NULL;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_user = 0;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->description = NULL;
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->execute_error = 0;

	char *datacube_in;
	char *value;

	// retrieve objkeys
	value = hashtbl_get(task_tbl, OPH_IN_PARAM_OBJKEY_FILTER);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_OBJKEY_FILTER);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_FRAMEWORK_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_OBJKEY_FILTER);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	if (oph_tp_parse_multiple_value_param(value, &((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys, &((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys_num)) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Operator string not valid\n");
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, "Operator string not valid\n");
		oph_tp_free_multiple_value_param_list(((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys, ((OPH_SPLIT_operator_handle *) handle->operator_handle)->objkeys_num);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	// retrieve sessionid
	value = hashtbl_get(task_tbl, OPH_ARG_SESSIONID);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_ARG_SESSIONID);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_FRAMEWORK_MISSING_INPUT_PARAMETER, OPH_ARG_SESSIONID);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	if (!(((OPH_SPLIT_operator_handle *) handle->operator_handle)->sessionid = (char *) strndup(value, OPH_TP_TASKLEN))) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Error allocating memory\n");
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_GENERIC_MEMORY_ERROR_INPUT, "sessionid");
		return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
	}
	//3 - Fill struct with the correct data
	value = hashtbl_get(task_tbl, OPH_IN_PARAM_DATACUBE_INPUT);
	datacube_in = value;
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_DATACUBE_INPUT);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_SPLIT_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_DATACUBE_INPUT);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	//For error checking
	int id_datacube_in[3] = { 0, 0, 0 };

	value = hashtbl_get(task_tbl, OPH_ARG_USERNAME);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_ARG_USERNAME);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_SPLIT_MISSING_INPUT_PARAMETER, OPH_ARG_USERNAME);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	char *username = value;

	if (handle->proc_rank == 0) {
		//Only master process has to initialize and open connection to management OphidiaDB
		ophidiadb *oDB = &((OPH_SPLIT_operator_handle *) handle->operator_handle)->oDB;
		oph_odb_init_ophidiadb(oDB);

		if (oph_odb_read_ophidiadb_config_file(oDB)) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to read OphidiaDB configuration\n");
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_SPLIT_OPHIDIADB_CONFIGURATION_FILE);
			return OPH_ANALYTICS_OPERATOR_UTILITY_ERROR;
		}

		if (oph_odb_connect_to_ophidiadb(oDB)) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to connect to OphidiaDB. Check access parameters.\n");
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_SPLIT_OPHIDIADB_CONNECTION_ERROR);
			return OPH_ANALYTICS_OPERATOR_MYSQL_ERROR;
		}
		//Check if datacube exists (by ID container and datacube)
		int exists = 0;
		int status = 0;
		char *uri = NULL;
		int folder_id = 0;
		int permission = 0;

		if (oph_pid_parse_pid(datacube_in, &id_datacube_in[1], &id_datacube_in[0], &uri)) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to parse the PID string\n");
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_PID_ERROR, datacube_in);
			id_datacube_in[0] = 0;
			id_datacube_in[1] = 0;
		} else if ((oph_odb_cube_check_if_datacube_not_present_by_pid(oDB, uri, id_datacube_in[1], id_datacube_in[0], &exists)) || !exists) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unknown input container - datacube combination\n");
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_NO_INPUT_DATACUBE, datacube_in);
			id_datacube_in[0] = 0;
			id_datacube_in[1] = 0;
		} else if ((oph_odb_cube_check_datacube_availability(oDB, id_datacube_in[0], 0, &status)) || !status) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "I/O nodes storing datacube aren't available\n");
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_DATACUBE_AVAILABILITY_ERROR, datacube_in);
			id_datacube_in[0] = 0;
			id_datacube_in[1] = 0;
		} else if ((oph_odb_fs_retrive_container_folder_id(oDB, id_datacube_in[1], 1, &folder_id))) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to retrieve folder of specified datacube or container is hidden\n");
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_DATACUBE_FOLDER_ERROR, datacube_in);
			id_datacube_in[0] = 0;
			id_datacube_in[1] = 0;
		} else if ((oph_odb_fs_check_folder_session(folder_id, ((OPH_SPLIT_operator_handle *) handle->operator_handle)->sessionid, oDB, &permission)) || !permission) {
			//Check if user can work on datacube
			pmesg(LOG_ERROR, __FILE__, __LINE__, "User %s is not allowed to work on this datacube\n", username);
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_DATACUBE_PERMISSION_ERROR, username);
			id_datacube_in[0] = 0;
			id_datacube_in[1] = 0;
		}
		if (uri)
			free(uri);
		uri = NULL;

		if (oph_odb_user_retrieve_user_id(oDB, username, &(((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_user))) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to extract userid.\n");
			logging(LOG_ERROR, __FILE__, __LINE__, ((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_input_container, OPH_LOG_GENERIC_USER_ID_ERROR);
			return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
		}

		id_datacube_in[2] = id_datacube_in[1];
		if (id_datacube_in[1]) {
			value = hashtbl_get(task_tbl, OPH_IN_PARAM_CONTAINER_INPUT);
			if (!value) {
				pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_CONTAINER_INPUT);
				logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_FRAMEWORK_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_CONTAINER_INPUT);
				return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
			}
			if (strncmp(value, OPH_COMMON_DEFAULT_EMPTY_VALUE, OPH_TP_TASKLEN)) {
				if (oph_odb_fs_retrieve_container_id_from_container_name(oDB, folder_id, value, 0, &id_datacube_in[2])) {
					pmesg(LOG_ERROR, __FILE__, __LINE__, "Unable to retrieve folder of specified container or it is hidden\n");
					logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_GENERIC_DATACUBE_FOLDER_ERROR, value);
					id_datacube_in[0] = 0;
					id_datacube_in[1] = 0;
				}
			}
		}
	}
	//Broadcast to all other processes the fragment relative index        
	MPI_Bcast(id_datacube_in, 3, MPI_INT, 0, MPI_COMM_WORLD);

	//Check if sequential part has been completed
	if (id_datacube_in[0] == 0) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Master procedure or broadcasting has failed\n");
		logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_NO_INPUT_DATACUBE, datacube_in);
		return OPH_ANALYTICS_OPERATOR_UTILITY_ERROR;
	}
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_input_datacube = id_datacube_in[0];
	if (id_datacube_in[1] == 0) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Master procedure or broadcasting has failed\n");
		logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_NO_INPUT_CONTAINER, datacube_in);
		return OPH_ANALYTICS_OPERATOR_UTILITY_ERROR;
	}
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_input_container = id_datacube_in[1];
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_output_container = id_datacube_in[2];

	value = hashtbl_get(task_tbl, OPH_IN_PARAM_SCHEDULE_ALGORITHM);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_SCHEDULE_ALGORITHM);
		logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_SCHEDULE_ALGORITHM);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->schedule_algo = (int) strtol(value, NULL, 10);

	value = hashtbl_get(task_tbl, OPH_IN_PARAM_SPLIT_IN_FRAGMENTS);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_SPLIT_IN_FRAGMENTS);
		logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_SPLIT_IN_FRAGMENTS);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	((OPH_SPLIT_operator_handle *) handle->operator_handle)->split_number = (int) strtol(value, NULL, 10);

	value = hashtbl_get(task_tbl, OPH_ARG_IDJOB);
	if (!value)
		((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_job = 0;
	else
		((OPH_SPLIT_operator_handle *) handle->operator_handle)->id_job = (int) strtol(value, NULL, 10);

	value = hashtbl_get(task_tbl, OPH_IN_PARAM_DESCRIPTION);
	if (!value) {
		pmesg(LOG_ERROR, __FILE__, __LINE__, "Missing input parameter %s\n", OPH_IN_PARAM_DESCRIPTION);
		logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_FRAMEWORK_MISSING_INPUT_PARAMETER, OPH_IN_PARAM_DESCRIPTION);
		return OPH_ANALYTICS_OPERATOR_INVALID_PARAM;
	}
	if (strncmp(value, OPH_COMMON_DEFAULT_EMPTY_VALUE, OPH_TP_TASKLEN)) {
		if (!(((OPH_SPLIT_operator_handle *) handle->operator_handle)->description = (char *) strndup(value, OPH_TP_TASKLEN))) {
			logging(LOG_ERROR, __FILE__, __LINE__, id_datacube_in[1], OPH_LOG_OPH_SPLIT_MEMORY_ERROR_INPUT, "description");
			pmesg(LOG_ERROR, __FILE__, __LINE__, "Error allocating memory\n");
			return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
		}
	}

	return OPH_ANALYTICS_OPERATOR_SUCCESS;
}
int oph_metadata_crud(OPH_METADATA_operator_handle *handle, MYSQL_RES **read_result)
{
    *read_result = NULL;
    ophidiadb *oDB = &((OPH_METADATA_operator_handle*)handle)->oDB;

    //Fill and execute the appropriate query
    switch (handle->mode) {
        case OPH_METADATA_MODE_INSERT_VALUE:
        {
            if (!IS_OPH_ROLE_PRESENT(handle->userrole,OPH_ROLE_WRITE_POS)) {
                pmesg(LOG_ERROR, __FILE__, __LINE__, "At least \"%s\" permission is needed for this particular operation\n",OPH_ROLE_WRITE_STR);
                logging(LOG_ERROR,__FILE__,__LINE__, OPH_GENERIC_CONTAINER_ID,OPH_LOG_GENERIC_INVALID_USERROLE_ERROR,OPH_ROLE_WRITE_STR);
                return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
            }

            int idkey,idtype,iduser,idmetadatainstance;
	    if( !handle->metadata_keys || !handle->metadata_value){
                pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_INSERT_INSTANCE_ERROR);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_INSERT_INSTANCE_ERROR);
                return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
            }

            //retrieve type id
	    if(oph_odb_meta_retrieve_metadatatype_id(oDB, handle->metadata_type, &idtype)){
		pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_TYPE_ID_ERROR,handle->metadata_type);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_RETRIEVE_TYPE_ID_ERROR,handle->metadata_type);
                return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
            }

	    //Retrieve user id
	    if(oph_odb_user_retrieve_user_id(oDB, handle->user, &iduser)){
		pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_USER_ID_ERROR,handle->user);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID,  OPH_LOG_OPH_METADATA_RETRIEVE_USER_ID_ERROR,handle->user);
		return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
	    }

	    char** metadata_values = NULL;
	    int i, metadata_values_num = 0;
	    if (handle->metadata_keys_num>1)
	    {
		if(oph_tp_parse_multiple_value_param(handle->metadata_value, &metadata_values, &metadata_values_num))
		{
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_VALUE_ERROR, handle->metadata_value);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_RETRIEVE_VALUE_ERROR, handle->metadata_value);
			oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}
		if (handle->metadata_keys_num != metadata_values_num)
		{
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_VALUE_ERROR, handle->metadata_value);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_RETRIEVE_VALUE_ERROR, handle->metadata_value);
			oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}
	    }

	    for (i=0;i<handle->metadata_keys_num;++i)
	    {
		//retrieve key id
		if(oph_odb_meta_retrieve_metadatakey_id(oDB, handle->metadata_keys[i], handle->variable, handle->id_container_input, 1, &idkey)){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_KEY_ID_ERROR,handle->metadata_keys[i]);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_RETRIEVE_KEY_ID_ERROR,handle->metadata_keys[i]);
			if (handle->metadata_keys_num>1) oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}

		//insert into medatainstance table
		if(oph_odb_meta_insert_into_metadatainstance_table(oDB, handle->id_datacube_input, idkey, idtype, handle->metadata_keys_num>1 ? metadata_values[i] : handle->metadata_value, &idmetadatainstance)){
                	pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_INSERT_INSTANCE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_INSERT_INSTANCE_ERROR);
			if (handle->metadata_keys_num>1) oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);
                	return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
            	}

		//insert into manage table
		if(oph_odb_meta_insert_into_manage_table(oDB, idmetadatainstance, iduser)){
                	pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_INSERT_MANAGE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_INSERT_MANAGE_ERROR);
			if (handle->metadata_keys_num>1) oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);
                	return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
            	}
	    }

	    if (handle->metadata_keys_num>1) oph_tp_free_multiple_value_param_list(metadata_values, metadata_values_num);

            break;
        }
        case OPH_METADATA_MODE_READ_VALUE:
        {
		char *id_metadatainstance = NULL;
		if (handle->metadata_id >0 ) { //read one or more metadata with filters
			id_metadatainstance =  handle->metadata_id_str;
		}
		if(oph_odb_meta_find_complete_metadata_list(oDB, handle->id_datacube_input, (const char **)handle->metadata_keys, handle->metadata_keys_num, id_metadatainstance, handle->metadata_type_filter, handle->metadata_value_filter, read_result)){
    			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_READ_METADATA_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID,  OPH_LOG_OPH_METADATA_READ_METADATA_ERROR);
			return OPH_ANALYTICS_OPERATOR_MYSQL_ERROR;
		}

            break;
        }
        case OPH_METADATA_MODE_UPDATE_VALUE:
        {
		if (!IS_OPH_ROLE_PRESENT(handle->userrole,OPH_ROLE_WRITE_POS)) {
		        pmesg(LOG_ERROR, __FILE__, __LINE__, "At least \"%s\" permission is needed for this particular operation\n",OPH_ROLE_WRITE_STR);
		        logging(LOG_ERROR,__FILE__,__LINE__, OPH_GENERIC_CONTAINER_ID,OPH_LOG_GENERIC_INVALID_USERROLE_ERROR,OPH_ROLE_WRITE_STR);
		        return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}

		int iduser = 0, exists = 0;
		if( !handle->metadata_id || !handle->metadata_value){
                	pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_UPDATE_INSTANCE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_UPDATE_INSTANCE_ERROR);
			return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
		}

		//Check metadata instance id
		if(oph_odb_meta_check_metadatainstance_existance(oDB, handle->metadata_id, handle->id_datacube_input, &exists) || !exists){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_METADATAINSTANCE_FORCE_ERROR,handle->metadata_id);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_RETRIEVE_METADATAINSTANCE_FORCE_ERROR,handle->metadata_id);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}

		//Retrieve user id
		if(oph_odb_user_retrieve_user_id(oDB, handle->user, &iduser)){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_RETRIEVE_USER_ID_ERROR,handle->user);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID,  OPH_LOG_OPH_METADATA_RETRIEVE_USER_ID_ERROR,handle->user);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}

		//update medatainstance table
		if(oph_odb_meta_update_metadatainstance_table(oDB, handle->metadata_id, handle->id_datacube_input, handle->metadata_value, handle->force)){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_UPDATE_INSTANCE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_UPDATE_INSTANCE_ERROR);
                	return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
		}

		//insert into manage table
		if(oph_odb_meta_insert_into_manage_table(oDB, handle->metadata_id, iduser)){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_INSERT_MANAGE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_INSERT_MANAGE_ERROR);
                	return OPH_ANALYTICS_OPERATOR_MEMORY_ERR;
		}

            break;
        }
        case OPH_METADATA_MODE_DELETE_VALUE:
        {
		if (!IS_OPH_ROLE_PRESENT(handle->userrole,OPH_ROLE_WRITE_POS)) {
			pmesg(LOG_ERROR, __FILE__, __LINE__, "At least \"%s\" permission is needed for this particular operation\n",OPH_ROLE_WRITE_STR);
			logging(LOG_ERROR,__FILE__,__LINE__, OPH_GENERIC_CONTAINER_ID,OPH_LOG_GENERIC_INVALID_USERROLE_ERROR,OPH_ROLE_WRITE_STR);
			return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
		}

		if(oph_odb_meta_delete_from_metadatainstance_table(oDB, handle->id_datacube_input, (const char **)handle->metadata_keys, handle->metadata_keys_num, handle->metadata_id, handle->force)){
			pmesg(LOG_ERROR, __FILE__, __LINE__, OPH_LOG_OPH_METADATA_DELETE_INSTANCE_ERROR);
			logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_DELETE_INSTANCE_ERROR);
			return OPH_ANALYTICS_OPERATOR_MYSQL_ERROR;
            	}

            break;
        }
        default:
		pmesg(LOG_ERROR, __FILE__, __LINE__,OPH_LOG_OPH_METADATA_MODE_ERROR, handle->mode);
		logging(LOG_ERROR, __FILE__, __LINE__, OPH_GENERIC_CONTAINER_ID, OPH_LOG_OPH_METADATA_MODE_ERROR, handle->mode);
		return OPH_ANALYTICS_OPERATOR_BAD_PARAMETER;
    }
    //End of query processing

    return OPH_ANALYTICS_OPERATOR_SUCCESS;
}